防爆加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是(shi)(shi)一種消耗(hao)電(dian)能轉換(huan)為熱(re)(re)(re)(re)能,來對(dui)需(xu)加(jia)(jia)(jia)熱(re)(re)(re)(re)物料(liao)進(jin)行加(jia)(jia)(jia)熱(re)(re)(re)(re)。防爆加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)是(shi)(shi)由(you)外(wai)到里(li)外(wai)殼(不(bu)繡鋼/碳鋼/銅(tong)/鈦材等、發(fa)熱(re)(re)(re)(re)絲(鎳鉻鉛合金)、填充物(氧化鎂,作用(yong)是(shi)(shi)導熱(re)(re)(re)(re)、絕緣(yuan))、外(wai)殼(不(bu)繡鋼、碳鋼、鈦材、銅(tong) 等)、陶瓷封頭(作用(yong):絕緣(yuan))、防爆盒組(zu)成(cheng)的。加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)在工作中(zhong)低溫(wen)流(liu)體介(jie)質(zhi)通過(guo)管(guan)(guan)道(dao)在壓力作用(yong)下進(jin)入其輸(shu)入口,沿著(zhu)電(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)容器內部特定換(huan)熱(re)(re)(re)(re)流(liu)道(dao),運(yun)用(yong)空(kong)氣電(dian)熱(re)(re)(re)(re)管(guan)(guan)的流(liu)體熱(re)(re)(re)(re)力學原理(li)設計(ji)的路徑,帶走空(kong)氣加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)中(zhong)的電(dian)熱(re)(re)(re)(re)元(yuan)件工作中(zhong)所產生的高溫(wen)熱(re)(re)(re)(re)能量,使(shi)空(kong)氣加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)被加(jia)(jia)(jia)熱(re)(re)(re)(re)介(jie)質(zhi)溫(wen)度升高,加(jia)(jia)(jia)熱(re)(re)(re)(re)管(guan)(guan)出口得到工藝要求的高溫(wen)介(jie)質(zhi)。
產品特點
1.升溫時間(jian)在(zai)試驗電壓下,元件從環境溫度升至(zhi)試驗溫度時間(jian)應(ying)不大于(yu)15min
2.額(e)定(ding)功率(lv)(lv)偏(pian)差在(zai)充(chong)分發熱的條件下(xia),元件的額(e)定(ding)功率(lv)(lv)的偏(pian)差應不超(chao)過下(xia)列(lie)規(gui)定(ding)的范圍;對(dui)(dui)額(e)定(ding)功率(lv)(lv)小于等(deng)于100W的元件為:士10%。對(dui)(dui)額(e)定(ding)功率(lv)(lv)大于100W的元件為+5%~- 10%或10W,取兩(liang)者中的較大值。
3.泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)冷(leng)態泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)以及水壓(ya)和密封試(shi)驗后(hou)泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)應(ying)不(bu)超過0.5mA工(gong)作溫度下的熱(re)態泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)應(ying)不(bu)超過公式中的計算值,但(dan)不(bu)超過5mA I=1/6 (tTX0.00001) I一 熱(re)態泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)mA t-發熱(re)長度mm T-工(gong)作溫度C多個元件串聯到電(dian)(dian)源中時(shi),應(ying)以這一組元件為 整體(ti)進(jin)行泄(xie)露(lu)(lu)電(dian)(dian)流(liu)(liu)試(shi)驗。
4. 絕緣(yuan)(yuan)電(dian)阻(zu)(zu)出(chu)廠檢驗時冷態絕緣(yuan)(yuan)電(dian)阻(zu)(zu)應不(bu)小于(yu)50MQ密封(feng)試驗后(hou),長期存(cun)放或者使用后(hou)的(de)(de)絕緣(yuan)(yuan)電(dian)阻(zu)(zu)應不(bu)消(xiao)與MQ工作(zuo)溫度下(xia)的(de)(de)熱(re)態絕緣(yuan)(yuan)電(dian)阻(zu)(zu)應不(bu)低于(yu)公(gong)式中(zhong)的(de)(de)計算值(zhi),但應不(bu)小于(yu)1MQ R=「(10-0.015T) /t」X0.001 R熱(re)態絕緣(yuan)(yuan)電(dian)阻(zu)(zu)MQ t一-發 熱(re)長度mmT一工作(zuo)溫度°C
5.絕緣耐(nai)壓強度元件(jian)應在規(gui)定的試驗條(tiao)件(jian)和試驗電壓下(xia)保持1min,而(er)無(wu)閃絡和擊穿(chuan)現象
6.經受通(tong)斷電(dian)的能(neng)(neng)力元件應能(neng)(neng)在規定的試驗條(tiao)件下(xia)經歷2000次通(tong)斷電(dian)試驗,而(er)不發生損(sun)壞